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Originally Posted by Fullabunk
For many reasons I like plugging all leaks for both air infiltration and uninvited mousies. What is the best sealant for larger holes that are drilled by Thor to run wiring everywhere. I have a few 1-2” holes. I assume some kind of expanding spray., but what is best?
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a few thoughts... Foam up to maybe 1", but you can consider other fill to make it narrower. Steel wool with foam or silicone is a DY metal fiber foam solution, but I've seen expanding foam products with metal fibers in them to deter the creatures that is a one-step solution. Great Stuff makes a version with a bitter chemical in the foam that deters pests, they say. Google away - lots of products.